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MSS SP-72-2010a
Ball Valves with Flanged or Butt-Welding Ends for General Service
Rplaces MSS SP-72-2010. Covers flanged or butt-weld end ball valves having in general, but not restricted to, round openings which may be full port, regular port, or reduced port types.
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]